How to get multiple selected values of select box

2018-12-31 07:14发布

站内问答 / PHP
1563 10 6

I have a html form which has a select list box from which you can select multiple values because its multiple property is set to multiple. Consider form method is 'GET'. The html code for the form is as follows:

<html>
    <head>
    <title>Untitled Document</title>
    </head>
    <body>
    <form id="form1" name="form1" method="get" action="display.php">
      <table width="300" border="1">
        <tr>
          <td><label>Multiple Selection </label>&nbsp;</td>
          <td><select name="select2" size="3" multiple="multiple" tabindex="1">
            <option value="11">eleven</option>
            <option value="12">twelve</option>
            <option value="13">thirette</option>
            <option value="14">fourteen</option>
            <option value="15">fifteen</option>
            <option value="16">sixteen</option>
            <option value="17">seventeen</option>
            <option value="18">eighteen</option>
            <option value="19">nineteen</option>
            <option value="20">twenty</option>
          </select>
          </td>
        </tr>
        <tr>
          <td>&nbsp;</td>
          <td><input type="submit" name="Submit" value="Submit" tabindex="2" /></td>
        </tr>
      </table>
    </form>
    </body>
    </html>

I want to display the selected values in select list box on display.php page. So how are the selected values accessed on display.php page using $_GET[] array.

10条回答
公子世无双
2楼-- · 2018-12-31 07:43

Use the following program for select the multiple values from select box.

multi.php

<?php
print <<<_HTML_
<html>
        <body>
                <form method="post" action="value.php">
                        <select name="flower[ ]" multiple>
                                <option value="flower">FLOWER</option>
                                <option value="rose">ROSE</option>
                                <option value="lilly">LILLY</option>
                                <option value="jasmine">JASMINE</option>
                                <option value="lotus">LOTUS</option>
                                <option value="tulips">TULIPS</option>
                        </select>
                        <input type="submit" name="submit" value=Submit>
                </form>
        </body>
</html>
_HTML_

?>

value.php

<?php
foreach ($_POST['flower'] as $names)
{
        print "You are selected $names<br/>";
}

?>
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美炸的是我
3楼-- · 2018-12-31 07:43 
foreach ($_POST["select2"] as $selectedOption)
{    
    echo $selectedOption."\n";  
}
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牵手、夕阳
4楼-- · 2018-12-31 07:45

If you want PHP to treat $_GET['select2'] as an array of options just add square brackets to the name of the select element like this: <select name="select2[]" multiple …

Then you can acces the array in your PHP script

<?php
header("Content-Type: text/plain");

foreach ($_GET['select2'] as $selectedOption)
    echo $selectedOption."\n";

$_GET may be substituted by $_POST depending on the <form method="…" value.

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牵手、夕阳
5楼-- · 2018-12-31 07:45

You can use this code to retrieve values from multiple select combo box

HTML:

<form action="c3.php" method="post">
  <select name="ary[]" multiple="multiple">
    <option value="Option 1" >Option 1</option>
    <option value="Option 2">Option 2</option>
    <option value="Option 3">Option 3</option>
    <option value="Option 4">Option 4</option>
    <option value="Option 5">Option 5</option>
  </select>
  <input type="submit">
</form>

PHP: 

<?php
$values = $_POST['ary'];

foreach ($values as $a){
    echo $a;
}
?>
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